Home / 687,256.14-1,030,469.76-308,108.19

Finding the Fourth Proportional to 687,256.14, 1,030,469.76 and 308,108.19

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Solution

The fourth proportional to 687,256.14, 1,030,469.76 and 308,108.19 is: 461,976.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,256.14 : 1,030,469.76 = 308,108.19 : x
  2. Step 2: Convert to fraction form
    687,256.14/1,030,469.76 = 308,108.19/x
  3. Step 3: Cross multiply
    687,256.14x = 1,030,469.76 × 308,108.19
  4. Step 4: Simplify right side
    687,256.14x = 317,496,172,603.33
  5. Step 5: Solve for x
    x = 317,496,172,603.33/687,256.14
  6. Step 6: Final answer
    x = 461,976.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.